oxygen firefighters are people who give CPR to animals if they have been hurt or if they have no oxygen left in their body. This is their job and what their supposed to be doing
Firefighters typically get oxygen tanks from their fire department or fire station. These tanks are filled with compressed oxygen and are essential for providing breathable air to firefighters in hazardous or smoke-filled environments.
For oxygen masks for firefighters, scuba divers etc
heat or oxygen
At the place of fire, the burning things use up all the oxygen(burning is nothing but reaction with oxygen) and fill the place with Carbon Monoxide and dense fumes, so to be able to stand there and douse the fire, firefighters do need Oxygen to breathe properly.
It's used to extinguish fires because carbon dioxide supersedes the oxygen. Without oxygen, no fire can burn.
Understanding the scientific process of combustion, enables firefighters to put out flames. The fire triangle or Fuel, Heat and Oxygen, requires only one element to be removed to extinguish a fire.
they use oxygen mask to breath so they die in all the smoke
The foam is not gas, but chemicals that prevent the fuel source in a fire from receiving the oxygen needed to sustain a fire.
There is no standard collective noun for firefighters, in which case a noun that suits the situation can be used; for example a crew of firefighters, a squadron of firefighters, a team of firefighters, etc.
The possessive form for the plural noun firefighters is firefighters'.
The air used in firefighters' tanks is typically compressed breathing air. It is usually a mixture of oxygen, nitrogen, and trace amounts of other gases. This air is supplied to firefighters to ensure their safety and enable them to breathe in hazardous environments.
In many cases suburban firefighters will make larger salaries then big city firefighters for several reason.